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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: some trivial questions?
Date: Thu, 16 Nov 2017 19:16:51 -0600
Organization: JSA Research & Innovation
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Xref: feeder.eternal-september.org comp.lang.ada:48953
Date: 2017-11-16T19:16:51-06:00
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"Robert A Duff" <bobduff@TheWorld.com> wrote in message 
news:wcch8u2jfu1.fsf@TheWorld.com...
> AdaMagica <christ-usch.grein@t-online.de> writes:
>
>> Ahem - what about the main subprogram?
>
> All subprograms, including the main one, should be
> inside packages.

That's how early versions of Janus/Ada were implemented. The main was called 
by the elaboration code of a package body, typically. And even now, so far 
as the Janus/Ada compiler is concerned, a library subprogram is nested 
inside of an anonymous package, thus for code generation purposes all 
library units are equivalent.

                                          Randy.